IRS21091SPBF

Series:	--
Packaging:	Tube
Part Status:	Active
Driven Configuration:	Half-Bridge
Channel Type:	Synchronous
Number of Drivers:	2
Gate Type:	IGBT, N-Channel MOSFET
Voltage - Supply:	10 V ~ 20 V
Logic Voltage - VIL, VIH:	0.8V, 2.5V
Current - Peak Output (Source, Sink):	290mA, 600mA
Input Type:	Non-Inverting
High Side Voltage - Max (Bootstrap):	600V
Rise / Fall Time (Typ):	100ns, 35ns
Operating Temperature:	-40°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	IRS21091SPBF

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Introduction to IRS21091SPBF

The IRS21091SPBF is a pre-biased, positive current-mode gate driver with a low-side switch and a wide input voltage range. It is designed to drive high side and low side power MOSFETs and IGBTs. This integrated driver operates with superior noise immunity, higher efficiency and low EMI. It is ideal for applications that require high switching speed, such as solar power systems, motor drives, and other applications where the fast switching time ensures proper operation of the system.

Applications of IRS21091SPBF

The IRS21091SPBF is mainly used for driving high side and low side power MOSFETs and IGBTs in solar power systems, motor drives, and other applications where fast switching time is required. Additionally, it can be used in consumer electronic equipment such as AC adapters and home appliances, as well as industrial equipment that must operate under extreme environmental conditions. It is also used in medical imaging systems to reduce the risk of electrical noise interference.

Advantages of the IRS21091SPBF

The IRS21091SPBF offers many advantages, some of which include: high noise immunity, fast switching times, wide input voltage range of 4 V to 42 V, low power consumption, superior EMI performance, and strong surge protection. Additionally, it is pre-biased, which reduces the need for complex gate drive circuitry and saves time and effort during power up.

Working Principle of the IRS21091SPBF

The IRS21091SPBF contains a low-side switch, a wide input voltage range, and current-mode control logic. The low-side switch can be activated by applying a low digital logic signal on the enable (EN) pin and is capable of handling maximum current up to 2 A. Additionally, the current-mode control logic provides fast switching times, superior noise immunity, and high efficiency. When the enable pin is triggered, the high-side MOSFET or IGBT is driven by the low-side switch and the current path is controlled by the current-mode control logic. This allows the rise and fall times of the MOSFET or IGBT to be set based on the current-mode loop.

Conclusion

The IRS21091SPBF is a pre-biased, positive current-mode gate driver with a low-side switch and a wide input voltage range. It is designed to drive high side and low side power MOSFETs and IGBTs and is ideal for applications that require high switching speed. It provides many advantages, such as high noise immunity, fast switching times, and low EMI. Additionally, it operates using current-mode control logic, which allows for the rise and fall times of the MOSFETs and IGBTs to be precisely set.

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